Lexicon a free Grammarly alternative, local writing assistant

Name: Lexicon a free Grammarly alternative, local writing assistant
Availability: InStock
Author: aashishharishch

by aashishharishch·Jul 26, 2026·1 point·0 comments

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AI Analysis

●●●BangerZero to OneSolve My Problem

Grammarly alternative that runs 100% offline with no subscriptions or data leaks.

Strengths

•Bundles quantized models via llama.cpp for true zero-latency local inference.
•LanguageTool engine runs locally with no API calls or account requirements.
•Custom dictionary persists across updates without losing personal vocabulary.

Weaknesses

•Desktop-only installer limits reach compared to browser-based competitors like Grammarly.
•Local LLM quality depends on user hardware, may struggle on older machines.

Post Description

Lexicon is a rich-text editor with grammar checking and AI writing tools (rewriting, tone shifting, and summarizing) that run entirely on your machine. No account, no API calls, and nothing uploaded. Grammar/spelling/punctuation checking runs through LanguageTool locally; the AI tools run through a small quantized model bundled with the app via llama.cpp, or your own Ollama server if you already run one. It's a desktop app installer for Windows and macOS on the releases page, with an in-app auto-updater.

Check it out: https://lexicon-writer.pages.dev/ MIT licensed. Repo: https://github.com/AashishH15/Lexicon

Please let me know what you think of the app!